20281212

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:352

約数の個数: 96

約数和(自身を含む): 60838400

約数和(自身を除く): 40557188

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 139, 189, 193, 252, 278, 378, 386, 417, 556, 579, 756, 772, 834, 973, 1158, 1251, 1351, 1668, 1737, 1946, 2316, 2502, 2702, 2919, 3474, 3753, 3892, 4053, 5004, 5211, 5404, 5838, 6948, 7506, 8106, 8757, 10422, 11676, 12159, 15012, 16212, 17514, 20844, 24318, 26271, 26827, 35028, 36477, 48636, 52542, 53654, 72954, 80481, 105084, 107308, 145908, 160962, 187789, 241443, 321924, 375578, 482886, 563367, 724329, 751156, 965772, 1126734, 1448658, 1690101, 2253468, 2897316, 3380202, 5070303, 6760404, 10140606, 20281212]

約数ペア:

[(1, 20281212), (2, 10140606), (3, 6760404), (4, 5070303), (6, 3380202), (7, 2897316), (9, 2253468), (12, 1690101), (14, 1448658), (18, 1126734), (21, 965772), (27, 751156), (28, 724329), (36, 563367), (42, 482886), (54, 375578), (63, 321924), (84, 241443), (108, 187789), (126, 160962), (139, 145908), (189, 107308), (193, 105084), (252, 80481), (278, 72954), (378, 53654), (386, 52542), (417, 48636), (556, 36477), (579, 35028), (756, 26827), (772, 26271), (834, 24318), (973, 20844), (1158, 17514), (1251, 16212), (1351, 15012), (1668, 12159), (1737, 11676), (1946, 10422), (2316, 8757), (2502, 8106), (2702, 7506), (2919, 6948), (3474, 5838), (3753, 5404), (3892, 5211), (4053, 5004)]